/*
 * MIT License
 *
 * Copyright (c) 2025 Mark·虎
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

package com.hsxxherp.key.support.sys.file;

import com.hsxxherp.key.support.sys.entity.SysFileInfo;
import com.hsxxherp.key.support.sys.service.IFileInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.util.UUID;

/**
 * 实现本地持久化
 */
@Service("localFileStorageService")
public class LocalIFileStorageService implements IFileStorageService {

    @Value("${file.local.path}")
    private String localPath;

    @Value("${file.temp.expire-time}")
    private long tempExpireTime;

    @Autowired
    private IFileInfoService fileInfoService;

    @Override
    public String saveFile(MultipartFile file, boolean isTemp) throws IOException {
        String fileName = UUID.randomUUID().toString() + "_" + file.getOriginalFilename();
        Path filePath = Paths.get(localPath, fileName);
        Files.write(filePath, file.getBytes());

        SysFileInfo fileInfo = new SysFileInfo();
        fileInfo.setFileName(fileName);
        fileInfo.setFilePath(filePath.toString());
        fileInfo.setTemp(isTemp);
        fileInfo.setCreateTime(LocalDateTime.now());
        if (isTemp) {
            fileInfo.setExpireTime(LocalDateTime.now().plus(tempExpireTime, ChronoUnit.SECONDS));
        }
        fileInfoService.save(fileInfo);

        return filePath.toString();
    }

    @Override
    public void deleteTempFiles() {
        LocalDateTime now = LocalDateTime.now();
        File dir = new File(localPath);
        File[] files = dir.listFiles();
        if (files != null) {
            for (File file : files) {
                SysFileInfo fileInfo = fileInfoService.lambdaQuery()
                        .eq(SysFileInfo::getFilePath, file.getAbsolutePath())
                        .one();
                if (fileInfo != null && fileInfo.isTemp() && fileInfo.getExpireTime().isBefore(now)) {
                    file.delete();
                    fileInfoService.removeById(fileInfo.getId());
                }
            }
        }
    }
}